Patrick goemly and lewis bridge



E G D I R B L & Y L M R 0 G P M M m STEAM RADIATOR.

FIGJ.

yd Jan Z, 1883-.

Patent I f I y FIG. 5.

12 VENTORI vi m v m, wmmn mm o. c.

UNITED STATES PATENT OFFICE.

PATRICK GORMLY AND LEWIS BRIDGE, OF PHILADELPHIA, PA.

STEAM-RADIATOR.

SPECIFICATION forming part of Letters Patent N 0. 270,053, dated January2, 18E3,

Application filed October 9, 1882.

To all whom it may concern:

Be it-kuown that we, PATRICK GoRMLY and LEWIS BRIDGE, citizens of theUnited States, residing in Philadelphia, Pennsylvania, have inventedcertain, Improvements in SteanrR-adiators, of which the following is aspecification.

Our invention relates to a steam-radiator ot' the same character as thatdescribed in our Patent No. 263,167, dated August 22, 1882, theprincipal difference between the present radiator and the patented onebeing in the method of constructing and connecting the inner and outertubes, the object being to permit the use-of cast-iron tubes in place ofthe sheetmetal tubes described in the patent.

In the accompanying drawings, Figure l is a longitudinal section ofa'heater constructed in accordance with our invention and comprisingthree radiators; Fig. 2, an enlarged section of one of the radiators;Fig. 3, a sectional plan on the line 1 2; Fig. 4, a longitudinal.seption ofan indirect radiator constructed in accordance with ourinvention, and Fig. 5 an end view of the heating-tubes and connectionsof said radiator.

Each radiator comprises an inner tube, A, and an outer tube, B,connected together at the ends, and inclosing an annular steam- B, at acorresponding distance from its ends,

are formed internal ribs, 9, the two sets of ribs coinciding when thetubes are fitted together, and thus forming at each end of the radiatoran annular chamber, which is filled with cement h, so asto efi'ectuallyplug up the ends of the radiator and prevent the escape of steam.

The cement which we prefer to use is composed of cast-iron turningsmoistened'with salammoniac; but any other cement which will make adurable steam-tight joint may be used.

(No model.)

To increase the radiating surface of the outer tube and add strength tothe same without unduly increasing the thickness, we oorrugate saidtube, as shown in Fig.3, the corrugations, by preference, not extendingbeyond the ribs 9 in the direction of the length of the tube. The innertube may also be corrugated,

[but this is not important.

In connecting a series of radiators to form an indirect radiator, weprefer to adopt the plan shown in Figs. 4 and 5, the radiators be-' iugarranged within an outer casing in their clined position shown, andconnected to the supply and discharge pipes by long and short branches.

In the radiator shown in our patent above alluded to the inner tube wasflared at each end and riveted to the outer tube; but when branches willbe formed on said tube.

Instead of forming an external rib, f, on the tube A and an internalrib, g, on the tube B, a single rib formed on either tube and extendingcompletely across the space a at each end may be employed. The use oftwo ribs is, however, preferred.

We claim as our invegtiou Thecombination of the inner tube, A, the outertube, B, the rib or ribs closing the space between the tubes, and thecement filling h, as specified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

PATRICK GORMLY. LEWIS BRIDGE.

Witnesses:

HARRY DRURY, HARRY SMITH.

